PHP errors in Cart

[commonangle]

J 2.5.6 VM 2.0.6

I can add products to cart without issue, but when I go to view cart I get these errors:

• Warning: mysqli_real_escape_string() [function.mysqli-real-escape-string]: Couldn't fetch mysqli in /mypath/libraries/joomla/database/database/mysqli.php on line 157
  
  Warning: mysqli_query() [function.mysqli-query]: Couldn't fetch mysqli in /mypath/libraries/joomla/database/database/mysqli.php on line 382
  
  Warning: mysqli_errno() [function.mysqli-errno]: Couldn't fetch mysqli in /mypath/libraries/joomla/database/database/mysqli.php on line 387
  
  Warning: mysqli_error() [function.mysqli-error]: Couldn't fetch mysqli in /mypath/libraries/joomla/database/database/mysqli.php on line 388

I tried using mysql instead of mysqli, but then the cart page has no templating and I get a fatal error.

I have found similar issues in this forum but the errors aren't exactly the same, and there were no solutions posted for the ones I found. Any help would be greatly appreciated!

[jenkinhill]

The warning is coming from the Joomla library file. You could try changing the setting for error reporting in Joomla Gobal config Server/Server settings.

[commonangle]

Thanks jenkinhill - I changed the setting from System Default to Simple and now VM is fine.

If errors are coming from the Joomla library and I disable or minimize the display of these errors, can I be sure that there isn't something seriously wrong? My reaction to errors is that they require a proper fix, not the proverbial bandaid, so I want to be sure that these errors won't affect the operation or security of the site,

[jenkinhill]

I'll guess your PHP version is 5.3? If so there are various reports of issues when using MySQLi  eg http://www.phpfreaks.com/forums/index.php?topic=281801.0

The warnings are advisory and may bite when updating PHP to version 6 (already used on some hosts) as currently depracated methods are removed from the code.  It has already been clearly stated by the Joomla developers that current Joomla 2.5 does not work with PHP6 but I'm sure the issues will be addressed as Joomla goes through the next development versions.